I fiddled with the currency exchange rate where I set up my currency as Kenya Shillings.I haven't enabled exchange rate service and have tried to make it resemble as closely as I can to Cronus.Now when I try to post a sales invoice for today after I fiddled with it.It goes through no problem but I cant seem to get it to work for invoices dated prior to today. The documentation is pretty vague as about this and this is only an issue I face when I post via the API.